package day03;

public class OperDemo5 {
    public static void main(String[] args) {
        //字符串拼接
        int age=15;
        System.out.println("age="+age);
        System.out.println("我今年"+age+"岁了");

        String name = "WKJ";
        System.out.println("大家好,我叫"+name);
        System.out.println("大家好，我叫"+name+",今年"+age+"岁了");

        System.out.println(10+20+""+30);//3030------String
        System.out.println(""+10+20+30);//102030------String
        System.out.println(10+20+30+"");//60------String
    }
}




















